render_compass: Render Compass Symbol

In tylermorganwall/rayshader: Create Maps and Visualize Data in 2D and 3D

Render Compass Symbol

Description

Places a compass on the map to specify the North direction.

Usage

render_compass(
  angle = 0,
  position = "SE",
  altitude = NULL,
  zscale = 1,
  x = NULL,
  y = NULL,
  z = NULL,
  compass_radius = NULL,
  scale_distance = 1,
  color_n = "darkred",
  color_arrow = "grey90",
  color_background = "grey60",
  color_bevel = "grey20",
  position_circular = FALSE,
  clear_compass = FALSE
)

Arguments

angle	Default '0'. The direction the arrow should be facing.
position	Default 'SE'. A string representing a cardinal direction. Ignored if 'x', 'y', and 'z' are manually specified.
altitude	Default 'NULL'. Altitude of the compass, defaults to maximum height in the map.
zscale	Default '1'. The ratio between the x and y spacing (which are assumed to be equal) and the z axis. Only used in combination with 'altitude'.
x	Default 'NULL'. X position. If not entered, automatically calculated using 'position' argument.
y	Default 'NULL'. Y position. If not entered, automatically calculated using 'position' argument.
z	Default 'NULL'. Z position. If not entered, automatically calculated using 'position' argument.
compass_radius	Default 'NULL'. The radius of the compass. If not entered, automatically calculated. Increase or decrease the size of the compass.
scale_distance	Default '1'. Multiplier that moves the compass away from the center of the map.
color_n	Default 'darkred'. Color of the letter N.
color_arrow	Default 'grey90'. Color of the arrow.
color_background	Default 'grey20'. Color of the area right under the arrow.
color_bevel	Default 'grey20'. Color of the bevel.
position_circular	Default 'FALSE'. If 'TRUE', will place compass at a constant radius away from the map, as opposed to directly next to it. Overridden if user manually specifies position.
clear_compass	Default 'FALSE'. Clears the compass symbol(s) on the map.

Value

Adds compass to map. No return value.

Examples

#Add a North arrow to the map, by default in the bottom right (SE)
if(run_documentation()) {
montereybay %>% 
 sphere_shade() %>%
 plot_3d(montereybay,theta=-45, water=TRUE)
render_compass()
render_snapshot()
}
if(run_documentation()) {
#Remove the existing symbol with `clear_compass = TRUE`
render_compass(clear_compass = TRUE)

#Point the N towards the light, at 315 degrees:
render_compass(angle = 315)
render_snapshot()
}
if(run_documentation()) {
render_compass(clear_compass = TRUE)

#We can change the position by specifying a direction (here are three):
render_camera(theta=45,phi=45)
render_compass(position = "NW")
render_compass(position = "E")
render_compass(position = "S")
render_snapshot()
}
if(run_documentation()) {
render_compass(clear_compass = TRUE)

#We can also change the distance away from the edge by setting the `scale_distance` argument.
render_compass(position = "NW", scale_distance = 1.4)
render_compass(position = "E", scale_distance = 1.4)
render_compass(position = "S", scale_distance = 1.4)

#Zoom in slightly:
render_camera(theta=45,phi=45,zoom=0.7)
render_snapshot()
}
if(run_documentation()) {
render_compass(clear_compass = TRUE)

#We can also specify the radius directly with `compass_radius`:
render_camera(theta=0,phi=45,zoom=1)
render_compass(position = "N", scale_distance = 1.5, compass_radius=200)
render_compass(position = "E", scale_distance = 1.4, compass_radius=50)
render_compass(position = "S", scale_distance = 1.3, compass_radius=25)
render_compass(position = "W", scale_distance = 1.2, compass_radius=10)
render_snapshot()

render_compass(clear_compass = TRUE)
}
if(run_documentation()) {
#We can also adjust the position manually, be specifying all x, y and z arguments.
render_camera(theta=-45,phi=45,zoom=0.9)
render_compass(x = 150, y = 50, z = 150)
render_snapshot()
}
if(run_documentation()) {
# Compass support is also included in render_highquality()
render_highquality(clamp_value=10, min_variance = 0, sample_method = "sobol_blue")
}
if(run_documentation()) {
render_compass(clear_compass = TRUE)

#We can change the colors in the compass, and also set it a constant distance away with
#`position_circular = TRUE`:

render_camera(theta=0,phi=45,zoom=0.75)
render_compass(position = "N", color_n = "#55967a", color_arrow = "#fff673", 
            color_background = "#cfe0a9", color_bevel = "#8fb28a", position_circular = TRUE)
render_compass(position = "NE", color_n = "black", color_arrow = "grey90", 
            color_background = "grey50", color_bevel = "grey20", position_circular = TRUE)
render_compass(position = "E", color_n = "red", color_arrow = "blue",
            color_background = "yellow", color_bevel = "purple", position_circular = TRUE)
render_compass(position = "SE", color_n = c(0.7,0.5,0.9), color_arrow = c(0.8,0.8,1), 
            color_background = c(0.2,0.2,1), color_bevel = c(0.6,0.4,0.6), 
            position_circular = TRUE)
render_compass(position = "S", color_n = "#ffe3b3", color_arrow = "#6a463a", 
            color_background = "#abaf98", color_bevel = "grey20", position_circular = TRUE)
render_compass(position = "SW", color_n = "#ffe3a3", color_arrow = "#f1c3a9", 
            color_background = "#abaf98", color_bevel = "#66615e", position_circular = TRUE)
render_compass(position = "W", color_n = "#e9e671", color_arrow = "#cbb387", 
            color_background = "#7c9695", color_bevel = "#cbb387", position_circular = TRUE)
render_compass(position = "NW", color_n = c(0.7,0,0), color_arrow = c(0.3,0,0), 
            color_background = c(0.7,0.5,0.5), color_bevel = c(0.2,0,0), position_circular = TRUE)
render_snapshot()
}

tylermorganwall/rayshader documentation built on May 18, 2024, 5:31 p.m.